| 摘要 |
PURPOSE: To provide an excellent liquid ejection pump which Jets a viscous liquid without dripping and also prevents drying and solidifying as far as possible. CONSTITUTION: The liquid in a cylinder is introduced into a stem through a pierced hole 31 of the lower end of the stem opened by pushing down a head 25 and jetted out through a nozzle 24. When the head is raised, the pierced hole 31 is closed by the piston 23 and the liquid in the container is sucked into the cylinder. The upper end of a bar-form suction valve member 5 is protruded into the stem so as to be liquid-tight and movable, in the liquid ejection pump. A delivery valve 26 in which the valve hole made at the upper part in the stem is closed by the valve body 37 vertically moved by hydraulic pressure, is provided and a vertical groove 40 for back flowing of liquid is bored at the outer periphery of the suction valve member. |
